

package com.hazelcast.jet.pipeline.file;

import java.util.HashSet;
import java.util.Set;

import static java.util.Arrays.asList;

/**
 * Internal util class to detect glob wildcards in a path
 */
final class WildcardMatcher {

    private static final char BACKSLASH = '\\';
    private static final Set<Character> WILDCARDS = new HashSet<>(asList('*', '?', '{', '['));

    /**
     * Utility class
     */
    private WildcardMatcher() {
    }

    public static boolean hasWildcard(String path) {
        for (int i = 0; i < path.length(); i++) {
            char ch = path.charAt(i);
            // check if the current char is wildcard AND if it isn't escaped by backslash
            if (WILDCARDS.contains(ch) && !(i > 0 && path.charAt(i - 1) == BACKSLASH)) {
                return true;
            }
        }
        return false;
    }
}
